Скачать или смотреть How to Select a DataGridView Row Programmatically in C#

Learn how to programmatically select a row in a DataGridView using C# in your Windows Forms applications. This guide covers various methods and techniques to achieve row selection programmatically.
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When working with DataGridView in C, you may encounter scenarios where you need to select a row programmatically based on certain conditions or events. This could be useful for tasks like highlighting a specific row based on user input or automatically selecting a row when the form loads. In this guide, we'll explore different methods to accomplish this task.

Selecting a Row by Index

The simplest way to select a row in a DataGridView programmatically is by specifying the index of the row you want to select. You can use the DataGridView's Rows collection to access a specific row and then set its Selected property to true. Here's a code snippet demonstrating this approach:

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Selecting a Row by Cell Value

Sometimes you may need to select a row based on a specific cell value rather than its index. You can iterate through the rows of the DataGridView, check the cell value, and select the row accordingly. Here's an example:

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Replace "ColumnName" with the actual name of the column containing the value you want to search for.

Selecting Multiple Rows

If your DataGridView allows multiple row selection and you want to select multiple rows programmatically, you can set the Selected property for each row individually. Here's a basic example:

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Scroll to Selected Row

After selecting a row programmatically, you may want to ensure that it is visible to the user, especially if it's not currently in the viewable area of the DataGridView. You can achieve this by using the FirstDisplayedScrollingRowIndex property. Here's how:

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Replace rowIndex with the index of the row you've selected.

By using these techniques, you can efficiently select DataGridView rows programmatically based on your application's requirements.